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Move copyKillDeadInfo out-of-line. Add findRegisterUseOperand().

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llvm-svn: 32273
This commit is contained in:
Evan Cheng 2006-12-06 08:27:42 +00:00
parent 6ae0c0fc62
commit 59494f9e3d
2 changed files with 36 additions and 17 deletions
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22
include/llvm/CodeGen/MachineInstr.h
View File

@ -386,25 +386,13 @@ public:
delete removeFromParent();
}
/// findRegisterUseOperand() - Returns the MachineOperand that is a use of
/// the specific register or NULL if it is not found.
MachineOperand *findRegisterUseOperand(unsigned Reg);
/// copyKillDeadInfo - Copies kill / dead operand properties from MI.
///
void copyKillDeadInfo(const MachineInstr *MI) {
for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) {
const MachineOperand &MO = MI->getOperand(i);
if (MO.isReg() && (MO.isKill() || MO.isDead())) {
for (unsigned j = 0, ee = getNumOperands(); j != ee; ++j) {
MachineOperand &MOp = getOperand(j);
if (MOp.isIdenticalTo(MO)) {
if (MO.isKill())
MOp.setIsKill();
else
MOp.setIsDead();
break;
}
}
}
}
}
void copyKillDeadInfo(const MachineInstr *MI);
//
// Debugging support

31
lib/CodeGen/MachineInstr.cpp
View File

@ -169,6 +169,37 @@ bool MachineOperand::isIdenticalTo(const MachineOperand &Other) const {
}
}
/// findRegisterUseOperand() - Returns the MachineOperand that is a use of
/// the specific register or NULL if it is not found.
MachineOperand *MachineInstr::findRegisterUseOperand(unsigned Reg) {
for (unsigned i = 0, e = getNumOperands(); i != e; ++i) {
MachineOperand &MO = getOperand(i);
if (MO.isReg() && MO.isUse() && MO.getReg() == Reg)
return &MO;
}
return NULL;
}
/// copyKillDeadInfo - Copies kill / dead operand properties from MI.
///
void MachineInstr::copyKillDeadInfo(const MachineInstr *MI) {
for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) {
const MachineOperand &MO = MI->getOperand(i);
if (!MO.isReg() || (!MO.isKill() && !MO.isDead()))
continue;
for (unsigned j = 0, ee = getNumOperands(); j != ee; ++j) {
MachineOperand &MOp = getOperand(j);
if (!MOp.isIdenticalTo(MO))
continue;
if (MO.isKill())
MOp.setIsKill();
else
MOp.setIsDead();
break;
}
}
}
void MachineInstr::dump() const {
llvm_cerr << " " << *this;
}